97889171 has 2 divisors, whose sum is σ = 97889172. Its totient is φ = 97889170.

The previous prime is 97889167. The next prime is 97889177. The reversal of 97889171 is 17198879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97889171 - 2² = 97889167 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97889177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48944585 + 48944586.

It is an arithmetic number, because the mean of its divisors is an integer number (48944586).

Almost surely, 2^97889171 is an apocalyptic number.

97889171 is a deficient number, since it is larger than the sum of its proper divisors (1).

97889171 is an equidigital number, since it uses as much as digits as its factorization.

97889171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 50.

The square root of 97889171 is about 9893.8956432742. The cubic root of 97889171 is about 460.8697643130.

The spelling of 97889171 in words is "ninety-seven million, eight hundred eighty-nine thousand, one hundred seventy-one".